Cannula attachment



FIG. 1 is an elevated oblique perspective view of a cannula attachment;

FIG. 2 is a rear view of the cannula attachment;

FIG. 3 is a top view of the cannula attachment;

FIG. 4 is a left side view of the cannula attachment;

FIG. 5 is a bottom view of the cannula attachment;

FIG. 6 is a front view of the cannula attachment; and,

FIG. 7 is a right side view of the cannula attachment. 

The ornamental design for a cannula attachment, as shown and described. 